An open-source, free GUI text editor created and maintained by GitHub. You can keep track of git project
changes, commit from the GUI, and see what branch you are on. You can customize the themes for different colors and install syntax highlighting packages for different languages. You can install Atom on Linux, macOS and Windows. Useful Atom plugins include:

A full IDE (integrated development environment) for Python software development. It ships with everything you need to write python scripts and complete software, including support for YAML syntax highlighting. It’s a little overkill for writing roles/playbooks, but it can be a very useful tool if you write modules and submit code for Ansible. Can be used to debug the Ansible engine.

A closed-source, subscription GUI text editor. You can customize the GUI with themes and install packages for language highlighting and other refinements. You can install Sublime on Linux, macOS and Windows. Useful Sublime plugins include: